Let me begin my stating that I'm no expert and only have experience with nine other tube mechs. In all honesty I hope someone else chimes in.
If you're looking for safety in a mech mod the Broadside does provide some ease of mind as the insulated tube does protect against a knicked battery wrap in some cases. I still would never recommend using a knicked battery, ever. And if you're looking for a safe mech, well, I'd dare to say that safety isn't the first thing I think of when it comes to mechs. Be sure to do your research if you haven't already. This forum provided me the knowledge to dive into the deep end and did so clearly and concisely, and I've only had one issue since.
As for the mod itself, I notice that it doesn't patina or oxidize hastily, so I'm assuming that the copper sports a low impurity content. The firing switch takes a little getting used to, but after the initial hurdle and so long as it's clean it never misfires or gets stuck. Add in that the battery rattle adjustment feature is very steady and has yet to back out on me and it's become one of my go-to's for at home use.
The defining factor for me though is that, compared to my X1 and my Shorty, the Broadside hits more aggressively. The X1 and Shorty are both so smooth, even with the same battery and the same build on the same RDA, but I tend to get more immediate gratification and hostility in my vape from the Broadside.
The only downside I've found is that cleaning the switch is a little more time consuming than with my other mods, but in my opinion it's worth it.
Again, I'm no expert, but I really do love the thing. When I work up the funds I'm certainly purchasing another.
Hope this helps in your decision. And remember, it's a battery down mod.